Why does this lines appear at the edge of the photo? only way to fix it is by cropping the photo.

[davecastellanos]

[AxelMatt]

Is this shown on every picture?

Please check the appropriate picture(s) files in another viewer if there's seen the issue?

Try to use another memory card in your camera.

Check your camera.

[dj_paige]

What camera (make and model) took this photo? Is it raw or JPG? What version of LrC? (we need the version number and not words like "current" or "up-to-date")

What happens if you turn off the GPU (Preferences->Performance tab->Use graphics processor set to OFF) ?

[DdeGannes]

Just a thought out of the box, are you using a camera model that has the feature to automatically create a lens profile, with the option to turn the option off?

[DS256]

As others have indicated, more information is needed.

Another check, if this is a RAW image. is to look at the embedded JPG preview. I believe in most cases this can be done in your OS file manager/finder. If it is on the embedded JPG image, then it is likely a camera issue.

[Jao vdL]

I recognize this. Adobe's lens correction profiles for several iPhone cameras (especially the ultrawide cameras) when shooting raw in the Lightroom app are not well tuned and this causes this smearing at the edges. Indeed only fix is cropping. 

Edit: just remembered that an easier fix is to counteract the overcorrection of lens distortion in these files is to dial in manual lens distortion correction of -5:

Unfortunately Adobe does not allow one to turn off the built-in lens correction which would also fix this problem.

[WeedCruz]

Had this same problem with Lightroom and my Canon RF 24-105 f2.8. I turned off the lens correction and the problem went away. I'm guessing LR needs an update for this relatively new lens. 

Thank you!

[Teddy5D73]

All of a sudden, I started having this same issue. Not on all images in the beginning and then later more and more. I thought it might be the card, but previewing the CR file in Preview was fine. The jpeg too. So it seemed to be only happening after import. First I was cropping that part out. But later found out that turning the Lens Correction off, removes these lines. I'm using the 24-240 lens. 

[JackSloan]

I also just suddenly started having this issue with the same lens (Canon RF 24-240mm f/4-6.3). Seems to depend on what zoom setting the photo was taken on, but the exact connection isn't clear.

[Teddy5D73]

Oh wow, that is indeed weird. I'll check the zoom settings and see if there's a correlation. 

[Teodora_Bodeanu]

I'm having the same issue with the same lens. But I've had this lens for a year, a couple of weeks ago everything was fine, today is the first time it's doing this. I updated LRc  today before importing, I think it has something to do with this update. 

[Jao vdL]

This is happening due to small errors in the lens correction definitions. It is supposed to also scale just so that the image after correction fits in the image rectangle. As I show above when the image rectangle is outside of the corrected area, Lightroom just makes up the pixels by repeating the last pixel in the horizontal direction and that leads to these lines at the edges of the image. So it is problems with the lens correction which is nowadays often taken from the embedded distortion parameters that mirrorless cameras embed in their raw files. So you see this problem often with superzoom lenses on mirrorless cameras (and on phones as I show above) that have a strongly variable distortion across their zoom range. 

[Teddy5D73]

It is indeed happening to focal lengths from about 35mm or so. Thanks for the tip of dialing in some manual correction. I will give it a try.

[PHuntly]

I'm in the same boat with the same lens. Like you said just started happening all of a sudden and seemingly randomly on some pics but not all.

[jamesr50949594]

I've had the same problem with my 24-240 lens on a Canon R6 Mk2. It only started a few months ago. I then noticed Lightroom had introduced a new Profile for this lens in their later updates,visible by clicking the right end of the Profile box. I selected v2 rather than the latest v3 and  the fault disappeared. I made v2 the default.

[Ian Lyons]

@jamesr50949594 

It's a known bug with the v3 profile. As you've discovered, using the v2 profile instead overcomes he issue. However, the v2 profile tends to have more corner vignetting than it should. Fortunately, this is easily corrected, should feel the need, by manually adjusting the Vignetting slider.